An item which generates a highly accurate signal of one or more fixed frequencies for calibration of frequencies from other sources. Does not include oscillator (as modified). For devices which are designed as voltage sources, see generator, signal. See also frequency meter.
Classification: Parts and accessories of articles of schedule b subheading 9030.39
NSN 5990-01-400-3299
NSN 6320-01-412-2973
NSN 5975-00-809-1000
NSN 5960-01-146-0289
NSN 2925-00-957-7329
NSN 7035-00-870-0290
NSN 5920-01-200-0683
NSN 6620-01-183-8959
NSN 5985-01-261-2307
NSN 5998-01-528-6847
NSN 5996-01-080-5957
NSN 7035-01-184-8905